VERY STUPID APP: This app is impossible to use in windows 10, I just downloaded because is free, but is a waste of time. I recommend INKSPACE free sofware instead this shit. free your mind people, use really free software.

I think this can be resolved by "open from Google Drive"
I am law student . I always use this trick by upload "code" to Google Drive and then when I double click on that PDF, It will show "open with" function .
Then I choose "Open with Xodo" and do the same way again with another code.
But I found the problem is I can't "Save to Google Drive". It stop at the end of complete bar.
So I much save to computer then reupload.
It's a little problem but if it is fix, It will be great and faster to work.

I use this app while teaching, and it would be very beneficial to have multiple documents open in separate windows so I can, for example, have the method shown in one window and the problem in another. As it is, if I want to do this now, I have to use Xodo for one window and then another app like Adobe Reader for the other.